/* ── Sentinel Due Diligence — shared stylesheet ─────────────── */

:root {
  --ink: #0b0f14;
  --panel: #121820;
  --panel-2: #0e141b;
  --line: #25303b;
  --text: #e6edf3;
  --muted: #9aa7b4;
  --accent: #ff6b35;
  --accent-2: #3d7ea6;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --sans: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--ink);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.container { width: min(1150px, 92%); margin: 0 auto; }

.mono {
  font-family: var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.72rem;
}

.eyebrow {
  font-family: var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.72rem;
  color: var(--accent);
}

/* ── Header & menu ──────────────────────────────────────────── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 15, 20, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 72px;
}

.brand { display: flex; flex-direction: column; line-height: 1.1; }

.brand strong {
  font-size: 1rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.brand span {
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-top: 4px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-left: auto;
  color: var(--muted);
  font-size: 0.88rem;
}

.nav a:hover { color: var(--text); }
.nav a.active { color: var(--accent); }

.nav .btn {
  padding: 11px 18px;
  font-size: 0.82rem;
}

.menu-toggle {
  display: none;
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text);
  padding: 10px 14px;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

.menu-toggle:hover { border-color: var(--muted); }

/* ── Buttons ────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 20px;
  border-radius: 2px;
  font-weight: 700;
  font-size: 0.86rem;
  letter-spacing: 0.02em;
  transition: 0.2s ease;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary { background: var(--accent); color: #0b0f14; }
.btn-primary:hover { background: #ff8358; transform: translateY(-1px); }

.btn-secondary {
  border-color: var(--line);
  color: var(--text);
  background: transparent;
}
.btn-secondary:hover { border-color: var(--muted); background: rgba(255,255,255,0.03); }

/* ── Heroes ─────────────────────────────────────────────────── */

.hero {
  padding: 96px 0 80px;
  background:
    radial-gradient(circle at 18% 0%, rgba(255,107,53,0.12), transparent 34%),
    radial-gradient(circle at 90% 20%, rgba(61,126,166,0.10), transparent 30%),
    linear-gradient(180deg, #0b0f14 0%, #0e141b 100%);
  border-bottom: 1px solid var(--line);
}

.page-hero {
  padding: 84px 0 64px;
  background:
    radial-gradient(circle at 14% 0%, rgba(255,107,53,0.12), transparent 34%),
    radial-gradient(circle at 88% 18%, rgba(61,126,166,0.10), transparent 30%),
    linear-gradient(180deg, #0b0f14 0%, #0e141b 100%);
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 56px;
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--accent);
  border: 1px solid rgba(255,107,53,0.35);
  padding: 8px 12px;
  margin-bottom: 24px;
  background: rgba(255,107,53,0.06);
}

.badge::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}

h1 {
  font-size: clamp(2.2rem, 5.4vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
  max-width: 850px;
}

h1 span { color: var(--accent); }

.hero-copy,
.page-hero p {
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 700px;
  margin-top: 24px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.hero-note {
  margin-top: 22px;
  color: var(--muted);
  font-size: 0.82rem;
}

.hero-panel {
  background: linear-gradient(180deg, rgba(18,24,32,0.95), rgba(14,20,27,0.95));
  border: 1px solid var(--line);
  padding: 26px;
  position: relative;
  overflow: hidden;
}

.hero-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.panel-title { color: var(--muted); margin-bottom: 18px; }

.signal {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 1;
}

.signal:last-child { border-bottom: 0; }
.signal span:first-child { color: var(--muted); font-size: 0.85rem; }

.signal span:last-child {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--accent);
  text-align: right;
}

/* ── Sections ───────────────────────────────────────────────── */

section {
  padding: 82px 0;
  border-bottom: 1px solid var(--line);
}

.section-head { max-width: 760px; margin-bottom: 46px; }

h2 {
  font-size: clamp(1.8rem, 3.4vw, 2.7rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-top: 12px;
}

.section-head p {
  color: var(--muted);
  margin-top: 18px;
  font-size: 1.02rem;
}

h3 { letter-spacing: -0.01em; }

/* ── Grids & cards ──────────────────────────────────────────── */

.grid { display: grid; gap: 18px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 26px;
  position: relative;
  transition: 0.2s ease;
}

.card:hover { border-color: #3a4755; transform: translateY(-2px); }

.card-number {
  font-family: var(--mono);
  color: var(--accent);
  font-size: 0.75rem;
  margin-bottom: 18px;
  display: block;
}

.card h3 { font-size: 1.05rem; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 0.92rem; }

.card ul { list-style: none; margin-top: 16px; }

.card li {
  color: var(--muted);
  font-size: 0.9rem;
  padding: 7px 0 7px 18px;
  border-bottom: 1px solid rgba(37,48,59,0.7);
  position: relative;
}

.card li:last-child { border-bottom: 0; }

.card li::before {
  content: "›";
  color: var(--accent);
  position: absolute;
  left: 0;
  font-weight: 700;
}

.split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: start;
}

/* ── Red flags ──────────────────────────────────────────────── */

.red-flag {
  border-left: 2px solid var(--accent);
  padding-left: 20px;
  margin-bottom: 24px;
}

.red-flag h3 { font-size: 1rem; margin-bottom: 6px; }
.red-flag p { color: var(--muted); font-size: 0.9rem; }

/* ── Reports ────────────────────────────────────────────────── */

.report {
  border: 1px solid var(--line);
  background: var(--panel-2);
  padding: 28px;
}

.report h3 { font-size: 1.15rem; margin-bottom: 6px; }

.report .time {
  font-family: var(--mono);
  color: var(--accent);
  font-size: 0.75rem;
  margin-bottom: 16px;
  display: block;
}

.report p { color: var(--muted); font-size: 0.92rem; }

/* ── Method page ────────────────────────────────────────────── */

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 8px;
}

.principle {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 26px;
}

.principle .mono { color: var(--accent); display: block; margin-bottom: 14px; }
.principle h3 { font-size: 1.05rem; margin-bottom: 10px; }
.principle p { color: var(--muted); font-size: 0.92rem; }

.step {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}

.step:last-of-type { border-bottom: 0; padding-bottom: 0; }
.step:first-of-type { padding-top: 0; }

.step-num {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--accent);
  border-top: 2px solid var(--accent);
  padding-top: 12px;
  letter-spacing: 0.08em;
}

.step-body h3 { font-size: 1.35rem; margin-bottom: 12px; letter-spacing: -0.02em; }

.step-body > p {
  color: var(--muted);
  font-size: 0.98rem;
  max-width: 780px;
}

.sources { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }

.tag {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
  background: rgba(61,126,166,0.12);
  border: 1px solid rgba(61,126,166,0.35);
  padding: 6px 10px;
}

.tag.accent {
  color: var(--accent);
  background: rgba(255,107,53,0.08);
  border-color: rgba(255,107,53,0.35);
}

.yields { margin-top: 22px; border-left: 2px solid var(--line); padding-left: 18px; }
.yields .mono { color: var(--muted); display: block; margin-bottom: 10px; }
.yields ul { list-style: none; }

.yields li {
  color: var(--muted);
  font-size: 0.9rem;
  padding: 6px 0 6px 18px;
  position: relative;
}

.yields li::before {
  content: "›";
  color: var(--accent);
  position: absolute;
  left: 0;
  font-weight: 700;
}

.callout {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-left: 2px solid var(--accent);
  padding: 30px;
  margin-top: 34px;
  max-width: 860px;
}

.callout h3 { font-size: 1.1rem; margin-bottom: 10px; }
.callout p { color: var(--muted); font-size: 0.94rem; }
.callout p + p { margin-top: 12px; }

/* ── CTA ────────────────────────────────────────────────────── */

.cta {
  text-align: center;
  padding: 96px 0;
  background:
    radial-gradient(circle at 50% 0%, rgba(255,107,53,0.12), transparent 40%),
    var(--panel-2);
}

.cta h2 { max-width: 820px; margin: 0 auto 18px; }
.cta p { color: var(--muted); max-width: 620px; margin: 0 auto 30px; }

.cta .email {
  display: inline-block;
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--accent);
  border-bottom: 1px solid rgba(255,107,53,0.4);
  padding-bottom: 3px;
}

/* ── Footer ─────────────────────────────────────────────────── */

footer {
  padding: 34px 0 0;
  color: var(--muted);
  font-size: 0.8rem;
  background: var(--ink);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  padding-bottom: 28px;
}

.footer-legal {
  color: var(--muted);
  line-height: 1.5;
}

.footer-sep {
  margin: 0 6px;
  color: #4b5866;
}

.footer-legal a {
  color: var(--muted);
  border-bottom: 1px solid rgba(154, 167, 180, 0.3);
  padding-bottom: 1px;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.footer-legal a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.footer-legal a.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.footer-note {
  color: var(--muted);
  max-width: 480px;
  line-height: 1.5;
}

/* ── Free resources row ─────────────────────────────────────── */

.footer-resources {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 20px 0 26px;
  border-top: 1px solid var(--line);
  font-size: 0.78rem;
}

.footer-resources-label {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #4b5866;
  margin-right: 6px;
}

.footer-resources a {
  color: var(--muted);
  border-bottom: 1px solid rgba(154, 167, 180, 0.2);
  padding-bottom: 1px;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.footer-resources a:hover {
  color: var(--accent-2);
  border-bottom-color: var(--accent-2);
}

/* ── Responsive ─────────────────────────────────────────────── */

@media (max-width: 920px) {
  .hero-grid,
  .split,
  .grid-3,
  .grid-2,
  .principles { grid-template-columns: 1fr; }

  .hero { padding-top: 64px; }
  section { padding: 64px 0; }

  .menu-toggle { display: inline-flex; }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-left: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--ink);
    border-bottom: 1px solid var(--line);
    padding: 6px 0;
    font-size: 0.95rem;
  }

  .nav.open { display: flex; }

  .nav a {
    padding: 14px 5%;
    border-bottom: 1px solid rgba(37,48,59,0.6);
  }

  .nav a:last-child { border-bottom: 0; }

  .nav .nav-cta {
    margin: 14px 5% 8px;
    padding: 13px 20px;
    border-bottom: 0;
  }

  .step { grid-template-columns: 1fr; gap: 16px; }

  .step-num {
    border-top: 0;
    border-left: 2px solid var(--accent);
    padding: 0 0 0 12px;
  }
}

@media (max-width: 620px) {
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding-bottom: 22px;
  }

  .footer-note {
    max-width: 100%;
  }

  .footer-resources {
    gap: 8px 14px;
    padding: 18px 0 22px;
  }

  .footer-resources-label {
    width: 100%;
    margin: 0 0 4px 0;
  }
}

@media (max-width: 560px) {
  .header-inner { min-height: 64px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
}